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      <title>CVE-2026-62685 — File Browser: Colliding username normalization gives two users the same home directory</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-62685</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; filebrowser&lt;/p&gt;
&lt;p&gt;File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser builds new user scopes from usernames passed through cleanUsername() when Signup=true and CreateUserDir=true, but the many-to-one normalization can collapse usernames such as team/one, team one, and team-one to the same home directory without checking whether the resulting scope is already taken, allowing a second registrant to gain full read and write access to another user&amp;#39;s files. This issue is fixed in version 2.63.17.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; filebrowser&lt;/p&gt;
&lt;p&gt;File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.17, File Browser builds new user scopes from usernames passed through cleanUsername() when Signup=true and CreateUserDir=true, but the many-to-one normalization can collapse usernames such as team/one, team one, and team-one to the same home directory without checking whether the resulting scope is already taken, allowing a second registrant to gain full read and write access to another user&amp;#39;s files. This issue is fixed in version 2.63.17.&lt;/p&gt;</content:encoded>
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